Tutorial on How To Disguise URLs of your Website

I uploaded the source code for this, and it is at http://planetsourcecode.com/vb/scripts/ShowCode.asp?txtCodeId=1204&lngWId=10<hr>The method used to change the url is the RewritePath method. Let's begin with the tutorial.
<br>
Create a new webproject.<br>
Add a class to the project.<br>Name it Rewriter<br>Add Imports statements for System and System.Web.<br>
We will write 2 methods(procedures/functions)<br>
The first will be a Private Function returning a String. This function will act as a translator for our URL.<br><br>
Public Function GetSubstitution(ByVal zPath As String) As String<br>
<font color=green>'This first string check is to see if the word test is in the URL<br>'If So, return show.aspx<br>'show.aspx is the actual page<br>and zPath is what is displayed in the browser and passed to the server through links</font><br>
 If InStr(zPath, "test") > 0 Then<br>
  Return "show.aspx"<br>
 End If<br>
<br><font color=green>'This second string validation checks the URL<br>for the extension htm<br>'If it is, replace the extension with aspx</font><br>
 If InStr(zPath, ".htm") > 0 Then<br>
  Dim intMarker As Integer<br>
  Dim strTemp As String<br>
  
  intMarker = Len(zPath) - 4<br>
  strTemp = Mid(zPath, 1, intMarker)<br>
  Return strTemp & ".aspx"<br>
 End If<br>
<br><font color=green>'The third check will show us how we can pass a query string<br>'</font><br><br>
 If IsNumeric(Left(zPath,Len(zPath)-4)) = True<br> Then<br>
  Dim strValue() As String<br>
  strValue = Left(zPath,Len(zPath)-4)<br>
  Return "show.aspx?ID=" & strValue<br>
 End If<br>
<font color=green>'After all string checks were perforemed<br>'and none of the criteria didn't match<br>'Return the original string</font>
 Return zPath<br>
 End Function<br>
<br>The second will be a Public Sub Procedure and include the Shared statement (this will be called from our web project). <br><br>
Public Shared Sub ReplaceURL()<br>
<font color=green>Create an instance of the class</font><br>
 Dim objRewrite As ReWriter = New urlReWriter()<br>
<font color=green>Create a string variable for our URL substitution</font><br>
 Dim strSubst As String<br>
<font color=green>Set the substitution string to our first function GetSubstitution<br>'We will pass the URL being sent to the browser<br>'through the function to get it's replacement</font><br>
 strSubst = objRewrite.GetSubstitution(HttpContext.Current.Request.Path)<br>
<font color=green>'If the length of our new URL is greater than zero<br>'Rewrite the URL path</font><br>
 If strSubst.Length > 0 Then<br>
  HttpContext.Current.RewritePath(strSubst)<br>
 End If<br>
 End Sub<br>
<br>Now in order to implement this, we need to call our class and put it to work.<br>In the Application_BeginRequest of the Global.asax file, call the ReplaceURL function.<br><br>Sub Application_BeginRequest(ByVal sender As Object, ByVal e As EventArgs)<br>
 ReWriter.ReplaceURL()<br>
 End Sub<br><br>This won't work yet. There's one more thing we have to do. That is tell the webserver how to handle our extensions.<br><br>open the IIS management console.<br>Open the properties of our webproject.<br>Click configuration button on the directory tab.<br>Add new extension<br>In the executable page, enter <b>C:\WINDOWS\Microsoft.NET\Framework\v1.1.4322\aspnet_isapi.dll</b><br>For extensions, enter the extensions you will be using, for this example, lets use <b>.*</b><br>Under Verbs, select Limit to, and enter <b>GET,HEAD,POST</b><br>Uncheck <b><br>Check that file exists<b><br>Click Ok, and apply settings. Now let's test it out.<br>Add a web form to the project. Name it <b>show.aspx</b>, and another named <b>5.aspx<br>In both pages in the page load add the line <b>Response.Write("Page= " & Request.Url.ToString)</b><br><br>Now add an HTML page. Call it what you wish. Add links to <b>5.tst</b> and <b>text.htm</b> and <b>test.zzz</b><br><br>The ReWrite function will be called on request of the pages, and will tell the server which page to load.
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